IF语句中的Python变量

Question

我查找了一个解决方案，但没有看到与我的问题相同的解决方案。我使用运行命令结构来远程运行主机名-i。所以这里是我有：

ip = run("hostname -i") 
if %s in run("nodetool -h localhost ring | awk '{ print $1}' | grep `hostname -i`") % ip: 
     print(green("The host is in the ring")) 

我只是试图检查，当运行nodetool命令时，当前服务器的IP地址是否显示。不是如何做到这一点。我是python的新手。

于是，我就分配“IP”的变量，有哪些激励问题的错误：

>>> ip = 10.0.0.1 
    File "<stdin>", line 1 
    ip = 10.0.0.1 
      ^
SyntaxError: invalid syntax 

编辑：

I tried a few things and this seems to work: 

>>> ip = local("hostname -i") 
[localhost] local: hostname -i 
10.88.17.59 
>>> if ip > 1: 
...  print "yes" 
... else: 
...  print "no" 
... 
yes 
>>> if ip in local("hostname -i"): 
...  print "yes" 
... else: 
...  print "no" 
... 
[localhost] local: hostname -i 
10.88.17.59 
yes 

Answer 1

我尝试了一些东西，这似乎工作：

>>> ip = local("hostname -i") 
[localhost] local: hostname -i 
10.1.2.3 
>>> if ip > 1: 
...  print "yes" 
... else: 
...  print "no" 
... 
yes 
>>> if ip in local("hostname -i"): 
...  print "yes" 
... else: 
...  print "no" 
... 
[localhost] local: hostname -i 
10.1.2.3 
yes